MAX4232:High-Output-Drive, 10MHz, 10V/µs, Rail-to-Rail I/O Op Amps with Shutdown in SC70

The MAX4230–MAX4234 single/dual/quad, high-output drive CMOS op amps feature 200mA of peak output current, rail-to-rail input, and output capability from single 2.7V to 5.5V supply. These amplifiers exhibit high slew rate of 10V/µs and a gain-bandwidth product (GBWP) of 10MHz. The MAX4230–MAX4234 can drive typical headset levels (32Ω), as well as bias an RF power amplifier (PA) in wireless handset applications. The MAX4230 comes in a tiny 5-pin SC70 package and the MAX4231, single with shutdown, is offered in a 6-pin SC70 package and in 1.5mm x 1.0mm UCSP™ and thin µDFN packages. The dual op-amp MAX4233 offered in the space-saving 10-bump chip-scale package (UCSP), providing the smallest footprint area for a dual op amp with shutdown. These op amps are designed to be part of the PA control circuitry, biasing RF PAs in wireless headsets. The MAX4231/MAX4233 offer a active-low SHDN feature that drives the output low. This ensures that the RF PA is fully disabled when needed, preventing unconverted signals to the RF antenna.

Key Features
  • Optimized for Headsets and High-Current Outputs
    • 200mA Output Drive Capability
    • 100dB Voltage Gain (RL = 100kΩ)
    • 85dB Power-Supply Rejection Ratio
    • No Phase Reversal for Overdriven Inputs
    • Unity-Gain Stable for Capacitive Loads to 780pF
  • Suitable for High-Bandwidth Applications
    • 10MHz Gain-Bandwidth Product
    • High Slew Rate: 10V/µs
  • Extends the Battery Life of Portable Applications
    • 1.1mA Supply Current per Amplifier
  • Low-Power Shutdown Mode Reduces Supply Current to < 1µA
  • Small Package Options
    • Tiny, 2.1mm x 2.0mm Space-Saving SC70 Package
MAX4230, MAX4231, MAX4232, MAX4233, MAX4234: Typical Operating Circuit
MAX4230, MAX4231, MAX4232, MAX4233, MAX4234: Typical Operating Circuit
  • Audio Hands-Free Car Phones (Kits)
  • Digital-to-Analog Converter Buffers
  • Motor Drivers
  • Portable Headphone Speaker Drivers (32Ω)
  • Portable/Battery-Powered Audio Applications
  • RF PA Biasing Controls in Handset Applications
  • Tablet/Notebook Computers
  • Transformer/Line Drivers
titleDownload file
MAX4230-MAX4234 Data SheetMAX4230-MAX4234.pdf
Part NumberAmps.Rail to RailVSUPPLY (Total)
ICC per Amp.
Low Input Bias CMOS InputsInput IBIAS
Unity Gain BW
Slew Rate
minmaxtypmaxtyptypmaxtyptyp<See Notes
$0.59 @1k
$0.59 @1k
$0.62 @1k
$0.72 @1k
$1.17 @1k
Design kits & evaluation modules
Quality and Environmental Data
Related Products
  • MAX4336:SC70/SOT23-8, 50mA IOUT, Rail-to-Rail I/O Op Amps with Shutdown/Mute
  • MAX4335:SC70/SOT23-8, 50mA IOUT, Rail-to-Rail I/O Op Amps with Shutdown/Mute
  • MAX4490:Low-Cost, High-Slew-Rate, Rail-to-Rail I/O Op Amps in SC70
  • MAX4165:High-Output-Drive, Precision, Low-Power, Single-Supply, Rail-to-Rail I/O Op Amps with Shutdown
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX4232AKA+ActiveSOT,;8 pin;9 mm²-40°C to +125°CLead Free
MAX4232AKA+TActiveSOT,;8 pin;9 mm²-40°C to +125°CLead Free
MAX4232AKA+TC2FActiveMAX4232AKA+TSOT;-40°C to +125°CSee data sheet
MAX4232AKA+TG069ActiveSOT,;8 pin;9 mm²-40°C to +85°CLead Free
MAX4232AKA-TNo Longer AvailableMAX4232AKA+TSOT,;8 pin;9 mm²-40°C to +125°CNo
MAX4232AUANo Longer AvailableMAX4232AUA+µMAX,;8 pin;15.6 mm²-40°C to +125°CNo
MAX4232AUA+ActiveµMAX,;8 pin;15.6 mm²-40°C to +125°CLead Free
MAX4232AUA+TActiveµMAX,;8 pin;15.6 mm²-40°C to +125°CLead Free
MAX4232AUA-TNo Longer AvailableMAX4232AUA+TµMAX,;8 pin;15.6 mm²-40°C to +125°CNo
MAX4232AUA/GG8ActiveµMAX,;8 pin;15.6 mm²-40°C to +125°CNo
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